Metallic ceiling



(No Model.)

G,H.BURT. METALLIC CEILING.

Patented July 1, 1890.

w T M V W W/TNESSES:

A TTOHNEYS STATES PATENT Price.

GEORGE HOLMES BURT, OF PHILADELPHIA, PENNSYLVANIA.

METALLIC CEILING.

SPECIFICATION forming part of Letters Patent No. 431,328, dated July 1, 1890.

Application filed November 8, 1889. Serial No. 329,611. (N0 model.)

To all whom it may concern.-

Be it known that I, Gnonon I-IoLMEs BURT,

ol Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and Improved Metallic Ceiling, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved metallic ceiling which is simple and durable in construction, fire-proof, very ornamental in appearance, and adapted for all kinds of buildings.

The invention consists of metallic plates adapted to be secured to the under sides of the joists and projecting on each side of the same, arched bars supported at suitable intervals on the projecting sides of the said plates, and a sheet-metal covering supported on the said arched bars between the joists.

The invention also consists of certain parts and details and combinations of the same, as will be hereinafter fully described, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional perspective view of the improvement. Fig. 2 is a transverse View of the same. Fig. 3 is a sectional plan view of the same on the line as :1; of Fig. 2, part being removed. Fig. 4 is a transverse section of a modified form of the improvement, and Fig. 5 is an enlarged longitudinal section of the same on the line y 1 of Fig. 4..

The improved metallic ceiling A is provided with metallic plates B, adapted to be secured by screws or bolts 0 on the under side of the joists D, so that the sides project a short distance beyond the sides of the joists, as is plainly shown in Fig. 2. At suitable intervals are placed between the joists D arched.

bars F, each provided on its top with a ridge or offset F thus forming flanges on each side of the ridge to support the ends of a sheetmetal casing G, extending from one arched bar to the other and bent to conform to the arch of the bar F.

The space on top of the sheet-metal casing G, between the joists I), can be filled in with a suitable filling H, such as asbestos, concrete, rise. The flooring E, held on top of the joists D and the said filling H, may be of wood, tiles, or other suitable material. In order to prevent the displacement of the arched bars F,

each end of the latter is provided, preferably, with an opening F into which fits a dowel B, projecting from the top of the metallic plates B, secured to thejoist-s D. Other suitable means may be employed to fasten the arched bars F on the plates B.

The heads of the bolts or screws 0 may be covered by rosettes or other suitable ornaments, and the sheetmetal covering G may be impressed,printed, or otherwise decorated with suitable ornaments, so as to give a very ornamental appearance to the ceiling.

A very cheap ceiling may be formed, as shown in Figs. 4 and 5, by nailing sheet-metal plates B to the under sides of the joists D and having their ends turned up on each side of the joists to receive downward1y-turned flanges formed on the ends of the arched bars F, each of which is provided on its ends with upwardly-bent flanges F adapted to be engaged by corresponding overlapping flanges G,.formed on the sheet-metal coverings G. (See Fig. 5.)

Cleats I are secured to the joists D above the middle of the ends of the metallic bars F, so as to prevent the latter from being disengaged from the plate B. No filling is employed, and in this manner a very cheap ceiling can be formed for use in ordinary frame houses. The bar F is curved, as shown in Fig. 5, and its arch is very flat- The arched bars may in some cases be entirely dispensed with. The ends of the covering-sheets are then preferably, for a short distance, corrugated, and the corrugations of two succeeding sheets are then overlapped, which will give the ceiling the appearance of panels, caused by the overlapping corrugated ends. The covering-sheets may also be corrugated throughout, if desired.

It will be seen that by forming a ceiling in this manner series of panels appear between the joists, which may be decorated in any desired manner. The sheet metal may be cor- IOO adapted to be secured to the under side of the joists and projecting on each side of the same, bars supported at suitable intervals on the projecting sides of the said plates, and sheet metal covering supported on the said bars between the joists, substantially as shown and described.

2. A metallic ceiling comprising plates adapted to be securedto the under side of the joists and projecting at each side of the same, arched bars fastened at their ends to the projecting sides of the said plates and each provided on top with a central rib, and a sheet-metal covering curved to the shape of the said bars and resting on the latter, abutting against its central rib, substantially as shown and described.

3. In a metallic ceiling, the combination, with the joists, of metallic plates secured to the under sides of the same and projecting on each side, arched bars secured at suitable intervals on the said metallic plates, and a sheetmetal covering curved to the shape of the said bars and resting on the same, substantially as shown and described.

4. In a metallic ceiling, the combination, with the joists, of metallic plates secured to the under sides of the sameand projecting 011 each side, arched bars secured at suitableintervals on the said metallic plates, a sheetmetal covering curved to the shape of the said bars and resting on the same, and a filling placed on top of the said metallic covering between the joists, substantially as shown and described.

GEORGE HOLMES BURT. lVitnesses:

thus. 0. THOMAS, J. G. THOMAS, HARRY L. THOMAS. 

